Stagin server.

Hello gurus in my environment we don't have a true staging server. we got development servers where the data is comming from 2 to 3 developers, so I will be highly thankful if you guy can tell me what are the true advantages of having a developement server.
Any help will be highly appreciated.
Thanks.

Think in the case of applying security patches and service packs, where you need to test your application and usage before applying it on the production. So having like-to-like staging server helps a lot to identify the root cause of few issues that are persistent in the production, this way you can reduce the down time and increase the high availability.